CanadianNorth From Canada, joined Aug 2002, 3417 posts, RR: 7 Posted (10 years 6 months 4 weeks 8 hours ago) and read 2050 times:
I know chances are someone else has already come up with the idea but I've never heard of it so here it goes...
Myself, and many others I know use their nalgenes in hot weather as well as cold weather, and put both hot and cold liquids in their nalgenes. So... my idea is why not make a nalgene that will keep cold liquids cold in hot weather and hot liquids hot in cold weather? All they would need to do is take the standard nalgene bottle, wrap a thin layer of insulation around it, slap on another layer of the stuff the bottle is made of over that, and make the plastic cap 2x thicker, and yer set. I think its a brilliant idea... I have 3 nalgenes and would be lost without them, and I wouldn't think twice about buying an insulated version....
BristolFlyer From United Kingdom, joined May 2004, 2326 posts, RR: 0
Reply 10, posted (10 years 6 months 3 weeks 6 days 15 hours ago) and read 1874 times:
Quoting CanadianNorth (Thread starter): wrap a thin layer of insulation around it, slap on another layer of the stuff the bottle is made of over that, and make the plastic cap 2x thicker, and yer set
How knowledgable are you in the science of heat transfer? Based upon this idea, probably not that hot. A thin layer of insulation would help, but wouldn't keep liquid hot or cold for that long. Thermoses are pretty tough nowadays, maybe you should speak to their warranty dept about your pick ax problem!